Answer 1

Sandeep Kumar K you can choose your favorite code in the codes

Answer 2

In which Language you want, what type of codes you want, in which field you want to go in?
These all Questions arise on your Single Question so it's better if you clarify your...... Question.

Answer 3

Sandeep Kumar K
You can even join Different Platforms like codepen and github to find some.
Github is the most important thing which you need in web development.
It tracks your changes made in your code so that you may not lose your old versions of code.
If you don't have this then you are not a professional web developer.